This question has been asked here, but received poor answers and didn't clarify the issue. I believe it justifies asking it again.
I understand that you can have duck typing with either dynamically ...

In Python, I often hear that it is better to "beg forgiveness" (exception catching) instead of "ask permission" (type/condition checking). In regards to enforcing duck typing in Python, is this
try:
...

I have been recently working on Objective C and came across use of Delegate pattern.
I had seen most of the common patterns theoretically in Java, thanks to the Head First book.
But at times looking ...

I noticed that as of PHP5, interfaces have been added to the language. However, since PHP is so loosely typed, it seems that most of the benefits of using interfaces is lost. Why is this included in ...